The 3RF3310-1AA45 is a 1-pole SIRIUS 3RF33 solid-state contactor rated AC-1 / 10 A at 40 °C. AC-1 is the resistive-load rating — heaters, incandescent lighting, or resistive banks — not motor or inductive loads. The 48-600 V operating range covers common single-phase line voltages from 48 VAC through 480 VAC and up to 600 VAC. Control is 4-30 V DC via screw terminals, which is a wide pull-in band: 4 V is the guaranteed pick-up threshold, so a 24 VDC PLC output driving a long cable run with voltage drop still fires it reliably. The 1200 V blocking voltage gives headroom against line transients on a 600 V system.
RoHS compliant since 15-01-24. Group Code R711, Product Group 3725 are Siemens internal classification codes used for cross-referencing in their catalog and spare-parts systems.